Ergodicity and mixing in quantum theory. II Academic Article uri icon


  • The approach proposed in the first part of this paper is illustrated by two examples. The first one involves the H\'enon-Heiles model. A small wave packet, initially localized in the classically chaotic region, evolves so that $〈x〉$ and $〈{x}^{2}〉$ rapidly reach their equilibrium values. The second example makes use of a pair of rotators with nonlinear coupling. The matrix elements of ${J}_{z}$, in the energy representation, are pseudorandom in the energy range which is classically chaotic, but obey selection rules in the classically regular energy range.

publication date

  • January 1, 1984